RUD CASE-HARDENED ROUND STEEL CHAINS.

In demanding and safety relevant industries, case-hardened RUD chains of RTS, RTD and RTB are the safe partner for

every electric hoist. High demands on resistance, wear resistance and reliability are guaranteed to the maximum.

For motor-driven hoists:

  • for high wear application according to DIN EN 818-7-T
  • have an extraordinarily high vibration resistance, which contributes decisively to the avoidance of fatigue fractures during operation

 

Technical data of the case-hardened RUD round link chain.

VERSION GRADE DAT/T
Mechanism GROUP ISO 4301-1 (FEM 9.511)NOMINAL stress
[N/mm ²]
LIMIT stress
[N/mm ²]
M1 (1Dm)200250
M2 (1Cm)160225
M3 (1Bm)160200
M4(1Am)140180
M5 (2m)125160
M6 (3m)112140
M7 (4m)100125
M8 (5m)90112

 

 

QUALITY AND DESIGNATION VERSION DATRTSRTDRTB
Production test stressσFPminN/mm ²500
Breaking stressσBminN/mm ²800
Elongation at breakAmin%10
Surface hardness
according to DIN EN 818-7
d≤6.5 ⌀
d ≥7 ⌀
HV 5
HV 10
500 - 650
Case hardening depth
in the joint HTÄ
(after macro etching)
…d
±0.01 d
mm≤ ⌀ 4/ 0.05
⌀ 4.1-7 / 0.04
⌀8-16 / 0.03
≥ ⌀ 16.1 / 0.02
< ⌀8 / 0.05
⌀8-11.5 / 0.04
≥⌀12 / 0.03
< ⌀8 / 0.05
⌀8-11.5 / 0.04
≥⌀12 / 0.03
Fatigue strengthN/mm ²130 ± 80130 ± 90130 ± 100

 

 

DIMENSION
[mm]
LOAD CAPACITY Ftr [kg] PER DRIVE GROUPProof forceBreaking forceWEIGHT
[kg/m]
GradeMATERIAL NUMBER
M3 (1Bm)M4 (1Am)M5 (2m)M6 (3m)FFPmin
[kN]
FBmin
[kN]
RTSRTDRTB
nominal stress:
160 N/mm²
nominal stress:
140 N/mm²
nominal stress:
125 N/mm²
nominal stress:
112 N/mm²
SAFETY
FACTOR: 5
SAFETY
FACTOR: 5.7
SAFETY
FACTOR: 6.4
SAFETY
FACTOR: 7.1
3 x 9230200180160711.30.19x7985902
4 x 1241035032028012.620.10.35xxx7100183
5 x 1564026050044019.631.40.54xxx7100184
6 x 1892080072064028.345.20.78xx7101362
6.3 x 19100088079071031.249.90.86x7983648
6.3 x 19.1100088079071031.249.90.86x7102922
7 x 211250109098087038.561.61.10xxx7102168
7 x 221250109098087038.561.61.10xxx7102168
7.1 x 20.21250109098087039.663.31.10xx7103637
7.1 x 21.212901130100090039.663.31.10x7102924
8 x 24164018101280114050.380.41.40x7101363
9 x 27207022401620145063.61021.80xxx7100186
10 x 28256022402000179078.51262.20x7102169
10 x 30.2256027002000179078.51262.20x7102926
11 x 313100280024202160951522.70x7102955
11.2 x 34320028002500224098.5157.62.70x7102927
11.2 x 34.4320028002500224098.5157.62.70x7102930
11.3 x 313270286025502280160.5160.52.70xxx7992923
13 x 364330378033803030132.7212.32.85xx59733
16 x 4565505730512045902013225.70xx55004
23.5 x 66141001237011000990043469412.20x7993516

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